A) \[\underset{3-methyl-2\text{ }bu\tan ol}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix} | \\ OH \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}}}\,\]
B) \[\underset{4-methyl-2-pentyne}{\mathop{C{{H}_{3}}-C\equiv C}}\,-CH{{(C{{H}_{3}})}_{2}}\]
C) \[\underset{2-ethyl-3\text{ }methyl-but-1-ene}{\mathop{C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix} || \\ C{{H}_{2}} \end{smallmatrix}}{\mathop{C}}\,-\underset{\begin{smallmatrix} | \\ C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}}}\,\]
D) \[\underset{3-methyl-4\text{ }ehtyl\text{ }hep\tan e}{\mathop{C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}-\underset{\begin{smallmatrix} | \\ C{{H}_{2}}C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-\overset{\begin{smallmatrix} C{{H}_{3}} \\ | \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{2}}C{{H}_{3}}}}\,\]
Correct Answer: D
Solution :
[d]
Correct IUPAC name is 4-ethyl-3-methyl heptane because substituents are written in alphabetical order.
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